Ported Intake - ZR-1 Net Registry Forums

LGAFF · 07-10-2011

I have a fully ported Plenum I/H set ready to go on an exchange basis.

These are 90-92...93-95 are 34mm stock

35mm ball passes completely through on primaries.......

IHs are blasted to aluminum and ready for paint or PC

Can blast plenum also

$700 plus your INJ Housings and Plenum

Shipping not included

35mm fooseball

I welcome questions, but please keep comments not related to sale out

gbmidyear66 · 07-14-2011

I expect that's probably about the cheapest 30ish HP one can add.

I like this deal - but am putting off for my winter project, will definitely want to discuss options in the fall.

GLWS

LGAFF · 09-28-2011

Bump

batchman · 09-28-2011

I keep thinking of these but am having a kind of classical year - you know, "baroque". OTOH I did skip buying tires this season so as to be able to address some things on the car.

Can you tell me what the change is from the porting to the head on a 91? By race class rules I can only go 1 inch into the head, and I worry that an aggressively ported IH/Plenum might make too big a step to take up in an inch.

Not to mention how would you go about making the shape to take up the step - a conical hone type of thing??

Has anyone ever bolted the likes of these on a virgin head? What kind of gains can be expected with the stock heads?

I would love to make these work; what the heck the rules allow it.... They'd even save a few pounds up high!

Thanks,
- Jeff

XfireZ51 · 09-28-2011

The secondaries start out as 36mm on the cylinder head side. You can do port match and keep it within an inch. It all helps. I had 36mm porting on top end with a port match at the head. Still developed ~399rwhp.

LGAFF · 09-28-2011

Possible sale pending....but like Lays....we'll make more....

Paul in VA · 10-04-2011

Hi:
Do you also do the same for 93-95 (the pre-ported parts in exchange for stock) ?

Paul in VA · 10-04-2011

Do you offer the same type exchange for 93-95?

LGAFF · 10-05-2011

If I had a set of 93-95 IHs and plenum I would do the exchange, but I do not. And buying a set is pricey....I would be willing to do a set over the winter, but I work and do not want to make a promise I can't keep in terms of time line.

Bob Eyres · 10-08-2011

Do you also do heads?

07-10-2011	#1
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Ported Intake I have a fully ported Plenum I/H set ready to go on an exchange basis. These are 90-92...93-95 are 34mm stock 35mm ball passes completely through on primaries....... IHs are blasted to aluminum and ready for paint or PC Can blast plenum also $700 plus your INJ Housings and Plenum Shipping not included 35mm fooseball I welcome questions, but please keep comments not related to sale out __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 09-28-2011 at 12:23 AM.

07-14-2011	#2
gbmidyear66 Join Date: Feb 2008 Location: Vancouver, BC Posts: 252	Re: Ported Intake I expect that's probably about the cheapest 30ish HP one can add. I like this deal - but am putting off for my winter project, will definitely want to discuss options in the fall. GLWS __________________ [SIGPIC][/SIGPIC] __________________ 1990 Corvette ZR-1 #2824 4.10's, Custom PROM, Flowmaster, Top End Port NCRS BC Chapter

09-28-2011	#3
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Ported Intake Bump __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

09-28-2011	#4
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 455	Re: Ported Intake I keep thinking of these but am having a kind of classical year - you know, "baroque". OTOH I did skip buying tires this season so as to be able to address some things on the car. Can you tell me what the change is from the porting to the head on a 91? By race class rules I can only go 1 inch into the head, and I worry that an aggressively ported IH/Plenum might make too big a step to take up in an inch. Not to mention how would you go about making the shape to take up the step - a conical hone type of thing?? Has anyone ever bolted the likes of these on a virgin head? What kind of gains can be expected with the stock heads? I would love to make these work; what the heck the rules allow it.... They'd even save a few pounds up high! Thanks, - Jeff __________________ [I]91 ZR-1 #1840, autocrossing in SCCA BSP. FIC S/S's DRM chip/Watson/Borla/lid/LW batt&headlights, springs, shocks, pads & lines, quick rack & Turn One, camber brace, 32/22mm sways, A/C halfway deleted 17x11 & 12 CCW's, 315 & 335 Hoosier A6s [/I]

09-28-2011	#5
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: Ported Intake The secondaries start out as 36mm on the cylinder head side. You can do port match and keep it within an inch. It all helps. I had 36mm porting on top end with a port match at the head. Still developed ~399rwhp.

09-28-2011	#6
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Ported Intake Possible sale pending....but like Lays....we'll make more.... __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-04-2011	#7
Paul in VA Join Date: Sep 2010 Location: Sterling, VA Posts: 147	Re: Ported Intake Hi: Do you also do the same for 93-95 (the pre-ported parts in exchange for stock) ? __________________ Thanks ... Paul (Paul in VA) WAZOO Member

10-04-2011	#8
Paul in VA Join Date: Sep 2010 Location: Sterling, VA Posts: 147	Re: Ported Intake Do you offer the same type exchange for 93-95? __________________ Thanks ... Paul (Paul in VA) WAZOO Member

10-05-2011	#9
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Ported Intake If I had a set of 93-95 IHs and plenum I would do the exchange, but I do not. And buying a set is pricey....I would be willing to do a set over the winter, but I work and do not want to make a promise I can't keep in terms of time line. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

10-08-2011	#10
Bob Eyres Join Date: Jul 2005 Location: Jupiter, Fl. Posts: 815	Re: Ported Intake Do you also do heads? __________________ "It's about the car, not the people." 1991 ZR-1 White/Black #1236 (Owner since 1994). Stock engine with bolt-ons: Hurst shifter,"Forced Air" intake, Coplon duct, Bee Cool Radiator, Demon coils, Jeal prom, Watson headers, X pipe, 3" B&B's, Rippie flywheel, 4:10 gears, A molds, Toyo Proxes-R888's 12.06@117mph. 1.76 60ft.